Unreal Engine Issues
Unreal Engine Issues
Changes in Blueprint Properties not Updated in placed Instance
UE - Gameplay - Blueprint - May 16, 2016When changing some properties in a Blueprint, the changes are not reflected in placed instances of the Blueprint. I've included repro steps from the licensee who reported this. I verified these step ...
Static lighting isn't bouncing when using Layered Materials
UE - Graphics Features - Lumen - Aug 13, 2020Static lighting will not bounce on the ceiling when using a Layered Material. The Material Attributes Layers node is used which doesn't appear in 4.24.3 so this isn't a regression. This was report ...
Atmosphere Sunlight shafts, artifacts, for both cascaded and virtual shadow maps.
UE - Rendering - Architecture - Feb 5, 2024Very large objects casting dynamic shadows on the sky atmosphere can lead to flickering (cascaded shadow maps) or square patterns (virtual shadow maps). ...
Crazy camera when zooming in/out the Sequencer
UE - Anim - Sequencer - Mar 22, 2024If you add Static Mesh (cube) in this Level Sequence and click on it in Sequencer, you can observe the Spline Path that the cube is following is changing its shape when keys in Sequencer are zoomed ...
Enabling Wireframe Mode along with HDR (EyeAdaptation) Visualization crashes the Editor
UE - Graphics Features - May 29, 2025In the Viewport, enabling Wireframe Mode (ALT+2) along with HDR (EyeAdaptation) Visualization crashes the Editor. I've tested different versions and this issue is not present on 5.0, but it reproduc ...
[CrashReport] UE4Editor_SteamVR!FSteamSplashTicker::Tick() [steamvrsplash.cpp:52]
UE - Platform - XR - Aug 3, 2018No user comments on crash group ...
Bloom intensity broken with Post Processing Material replacing Tonemapper
UE - Graphics Features - Sep 25, 2020When replacing the Tonemap using a Post Process material, the Post Process Volume's Bloom Intensity can only be turned on or off, without varying degrees of effect. Reported in version 4.25.3(CL 1 ...
Cracks in Nanite Tesselated Landscape
UE - Graphics Features - Nanite - May 13, 2024Landscape component edges can become disconnected when using Nanite Tessellation at the edges of weight-blended layers. ...
Flickering shadows/GI when DrawMaterialToRenderTarget is called per tick in PIE
UE - Rendering - Architecture - Jul 11, 2024When DrawMaterialToRenderTarget function is called on tick and actors are spawned in game, the lumen shadow/GI visually flickers. Debugging shows that the lumen screen probes are flickering as well. ...
Sampling textures with bias in the path of a custom data pin causes derivative operations when avoidable
UE - Rendering - Architecture - Materials - Apr 8, 2025Materials that make use of the analytical derivatives path to avoid hardware derivatives can still generate derivative operations on texture samples when the shading model has a custom data pin and ...